import { DateRange, MatCalendar } from '@angular/material/datepicker';
import { DATE_OPTION_TYPE } from '../constant/date-filter-const';
import { ISelectDateOption } from '../model/select-date-option.model';
import { ChangeDetectorRef } from '@angular/core';
import { ActiveDate } from '../model/active-date.model';
/**
 * Resets the selection state for all options
 * and marks the given option as selected if provided.
 *
 * @param options - List of date options
 * @param selectedOption - Option to be marked as selected
 */
export declare function resetOptionSelection(options: ISelectDateOption[], selectedOption?: ISelectDateOption): void;
/**
 * Marks the custom date option as selected.
 *
 * @param options - List of date options
 */
export declare function selectCustomOption(options: ISelectDateOption[]): void;
/**
 * Returns a new date with the given year offset applied.
 *
 * @param offset - Number of years to add (negative for past years)
 * @returns Date object with updated year
 */
export declare function getDateWithOffset(offset: number): Date;
/**
 * Creates a deep clone of the provided object or array.
 *
 * @param data - Data to be cloned
 * @returns A deep copy of the data
 */
export declare function getClone<T>(data: T): T;
/**
 * Formats a date object into a string using Angular DatePipe.
 *
 * @param date - Date to be formatted
 * @param dateFormat - Desired date format (e.g., 'dd/MM/yyyy')
 * @returns Formatted date string
 */
export declare function getDateString(date: Date, dateFormat: string): string;
/**
 * Formats a date range into a string with start and end dates.
 *
 * @param range - Date range with start and end
 * @param dateFormat - Desired date format
 * @returns Formatted range string (e.g., '01/01/2023 - 07/01/2023')
 */
export declare function getFormattedDateString(range: DateRange<Date>, dateFormat: string): string;
/**
 * Creates a standardized date option object for dropdowns.
 *
 * @param label - Display label for the option
 * @param key - Option key from DEFAULT_DATE_OPTION_ENUM
 * @param dateDiff - Offset in days from current date (default: 0)
 * @param isVisible - Whether the option is visible (default: true)
 * @returns ISelectDateOption object
 */
export declare function createOption(label: string, key: DATE_OPTION_TYPE, dateDiff?: number, isVisible?: boolean): ISelectDateOption;
/**
 * Returns the date of the next month based on the given date.
 *
 * @param currDate - Current date
 * @returns A new Date object incremented by one month
 */
export declare function getDateOfNextMonth(currDate: Date): Date;
/**
 * Returns the first day of the month following the given date.
 *
 * @param currDate - The current date
 * @returns A Date object set to the first day of the next month
 */
export declare function getFirstDateOfNextMonth(currDate: Date): Date;
/**
 * Returns the number of days in the month of the given date.
 *
 * @param date The date to calculate the days for.
 * @returns Number of days in the month.
 */
export declare function getDaysInMonth(date: Date): number;
/**
 * Overrides the `activeDate` setter for a MatCalendar instance, injecting custom handler logic
 * while preserving the original setter behavior. Useful for reacting to internal date navigation
 * events (e.g., month changes) in Angular Material's calendar.
 *
 * @param calendar - Instance of MatCalendar whose `activeDate` setter will be overridden.
 * @param cdref - ChangeDetectorRef to trigger view updates after the setter runs.
 * @param handler - Custom callback function executed whenever `activeDate` is set.
 */
export declare function overrideActiveDateSetter(calendar: MatCalendar<Date>, cdref: ChangeDetectorRef, handler: (date: ActiveDate) => void): void;